A '''myocardial infarction''' (also called a '''heart attack''') occurs when [[blood]] flow to a section of [[heart]] muscle becomes blocked. If the flow of blood isn’t restored quickly, the section of heart [[muscle]] becomes damaged from lack of [[oxygen]] and begins to die. | A '''myocardial infarction''' (also called a '''heart attack''') occurs when [[blood]] flow to a section of [[heart]] muscle becomes blocked. If the flow of blood isn’t restored quickly, the section of heart [[muscle]] becomes damaged from lack of [[oxygen]] and begins to die. |